Gas-expander and shade-holder



(No Model.) 2 Sheets--Sheet 1.

J. RIGBY.

GAS EXPANDEB. AND SHADE HOLDER.

Noi 365,539. Patented June28, 1887.

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' J. RIGB'Y.

GAS EXPANDED AND SHADE HOLDER.

No. 365,539. Patented June 28, 1887.

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and durable support for globes and shades shade. Fig. 7 is a sideelevation, and Fig. 8

.and I do hereby declare the following to be a UNITED STATES PATENTOFFICE.

JAMES RIGBY, OF MINNEAPOLIS, MINNESOTA/ GAS-EXPANDER AND SHADE-HOLDER.

' SPECIFICATION forming'part of Letters Patent No. 365,539, dated June28, 1887.

Application filed January 3, 1887.

To all whom it may concern 'Be it known that I, JAMES RIGBY, acitizen ofthe United States, residing at Minneapolis, in the county of Hennepinand State ofMinnesota, have invented certain new and useful Improvementsin GasExpanders and Shade-Holders;

full, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to certain new and useful improvements ingas-expanders and shadeholders; and it consists in a gas-pipe bent toform a circle or ring or series of rings above the gas-jet and form asupport for globesand shades.

The object of my invention is to form a cheap above the fiame, and atthe same time bend the gas-pipe, so it will receive the ascending heatthrown off from the burning jet below. lat; tain these objects by meansof the peculiar construction and arrangement of the various parts of mydevice, which will be more fully pointed out and described in thespecification and claims, reference being had to the drawingsaccompanying this application andforming part of the same, in whichFigure l is a perspective view of the gaspipe and vertical View of shadeand attachments. Fig. 2 is a perspective View of the bent gas-pipe. Fig.31s a top plan view of pipe, showing circle-rest for globe. Fig. 4 is avertical sectional view of shade-holder. Fig. 5 is a perspective view ofshade-holder. Fig. 6 is a vertical and sectional view'of pipe and is atop sectional view, of same.

Similar letters refer to like parts through out the drawingsw IReferring to the drawings, A represents a gas-pipe, which is bent nearits center to form a ring, 0, the outer end, 0, being curved outward andprovided with a coupling-ring, a, by which it is joined t aninflow-pipe, (not shown,) through which gas is forced into pipe A. Theopposite end of pipe A is curved in ward and outward, and'provided'withareducing-section, a, and the ordinary gas-jet, a..

Serial No. 223,249. (No model.)

An annular ring, D, is formed of any suitable material, (preferably ofmetal,) with radial arms or lugs b, and the under halfof said ring D isleft open, whereby it will slip over and rest on the top of the ring 0of pipe'A, as shown in Fig. l.

The globe or shade E is formed of glass, porcelain, or other suitablematerial, with wide open-mouthed bell-shaped base, and

curved inward and outward to form a rounded shoulder at c, the purposeof this construction.

being to reflect the rays of light downward at .is shown supported bythe inner flange, E,

directly upon the upper surface of the ring 0,

formed by bending pipe A. This construction dispenses with the annularring D, cheapens the construction, forms a reliable support for theglobe E, and concentrates rays of heat from the gas-jet upon the bentring 0, thus heating the inflowing gas to a high degree,therebyincreasing the volume of light by means of the expansion of thegas. form the circle or ring 0 at right angles to its -length,and the jet-tube end also at right angles;

but the flame of the burner is designed to occupy a place nearly centralbeneath the ring 0.

Havingdeseribed myinvention, whatlclaim, and desire to secure by LettersPatent, is-

1. A gasexpander and shade-holder consisting of a tube composed of avertical portion, a portion bent into circular form at right angles tothe vertical portion, and a downwardly-extendingportion,in combinationwith a concaveannular plate fitting loosely around the top of saidcircular portion, and provided with horizontal projecting shadesupports, substantially as shown and specified.

2. A gaseXpander and shade-holder consisting of a tube composed of avertical portion, a portion bent into circular form at right angles tothe vertical portion, the lower end of said vertical portion curvedinward and upward and terminating in a gas-nipple in line with thecenter of said circle, and a down- The top or neck of shade E The pipe Ais bent tov I wardly-extending portion, the lower end of thedownwardlyextending port-ion curved outward and provided with acoupling-ring, in combination with an outwardly-flaring bellshapedreflector having a neck-flange projectinginward over the circular bentportion of said tube, substantially as shown and specified.

3. The Combination of a circular expander, a bel1-shaped reflector andconcentrator having an inwardly-proiecting neck-flange, and ashade-suspending device consisting of an annular concave plate or ringhaving outwardly projecting horizontal supporting-arms formed to fit theunder face of said reflector neckflange, substantially as shown anddescribed. In testimony whereof I affix my signature in presence of twowitnesses.

J AMES RIGBY.

\Vitnesses:

VERNON M. DORSEY, G. FRED. KELLER.

